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(*---------------------------------------------------------------------------
Copyright (c) 2015 The mtime programmers. All rights reserved.
SPDX-License-Identifier: ISC
---------------------------------------------------------------------------*)
open B0_testing
(* Note nothing is being asserted in these tests. *)
let test_available () = try ignore (Mtime_clock.elapsed ()) with
| Sys_error e -> Test.failstop "No monotonic time available: %s" e
let test_counters () =
Test.test "Mtime_clock.counter" @@ fun () ->
let count max =
let c = Mtime_clock.counter () in
for i = 1 to max do () done;
Mtime_clock.count c
in
let do_count max =
let span = count max in
let span_ns = Mtime.Span.to_uint64_ns span in
Test.log "Count to % 8d: %10Luns %gs %a"
max span_ns (Mtime.Span.to_float_ns span *. 1e-9) Mtime.Span.pp span
in
do_count 1000000;
do_count 100000;
do_count 10000;
do_count 1000;
do_count 100;
do_count 10;
do_count 1;
()
let test_elapsed () =
Test.test "Mtime_clock.elapsed ns - s - pp - dump" @@ fun () ->
let span = Mtime_clock.elapsed () in
Test.log " %Luns - %gs - %a - %a"
(Mtime.Span.to_uint64_ns span)
(Mtime.Span.to_float_ns span *. 1e-9)
Mtime.Span.pp span
Mtime.Span.dump span;
()
let test_now () =
Test.test "Mtime_clock.now ns - s - pp - dump " @@ fun () ->
let t = Mtime_clock.now () in
let span = Mtime.(span t (of_uint64_ns 0_L)) in
Test.log " %Luns - %gs - %a - %a"
(Mtime.to_uint64_ns t) (Mtime.Span.to_float_ns span *. 1e-9)
Mtime.pp t Mtime.dump t;
()
let main () =
Test.main @@ fun () ->
test_available ();
test_counters ();
test_elapsed ();
test_now ();
()
let () = if !Sys.interactive then () else exit (main ())
|
